在交流电路中,因电流的大小和方向不断变化,所以电路中没有高低电位之分。
参考答案:错
在清代海军旗帜中正都统旗上有()颗星。
A、1;
B、2;
C、3;
D、4
Jaya is sixteen, but he doesn’t go to school. He studies medicine at New York University in a class of twenty-year-olds. Jaya was born in Madras in India but now lives in a house in New York with his mother, father and brother. They can all speak English. His father is a doctor.
Jaya was different from a very young age. He could count before he could say “Mummy” or “Daddy”. He could answer questions on calculus (微积分) when he was five and did algebra(几何) when he was eight. Now he studies from 8:15am to 4: 00am every day at the university. Then he studies at home with his father from 6:30 to 10:00 every evening. Jaya doesn’t have any friends. He thinks other children can’t understand him. He never goes out in the evenings, but he sometimes watches TV. He says, “I live for one thing — I want to be a doctor before I am nineteen.”
小题1:Is Jaya very clever?
.
小题2:Where was Jaya born?
小题3:Who teaches him medicine at home?
小题4:What was Jaya very interested in when he was very young, math or medicine?
小题5:Why doesn’t Jaya make friends?